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Related Standards

N/A

APPLICATIONS

Radio Communications 240 Series is a Radio equipment from ZITTO SYSTEM
radio communication system for ATC. For this series represents single
channel, with channel spacing 25 KHz. These radios operate in the band
ground to air VHF frequencies, this is the frequency of line of sight (LOS)
using amplitude modulation.

IMPORTANT FEATURES

General Technical Data:
• Field Frequency: 118-137 MHz
• Number of Channel: Single Channel / Synthehesizer
• Frequency Deviation: <5 x 10-6
• Channel Spacing: 25 Khz / 8:33 Khz (switchable)
• Housing: 19 "Standard Carrier Module With 5U height

Transmitter Technical Data:
• Field Frequency: 118-137 MHz
• Number of Channel: Single Channel / Synthesizer
• Freq. Stability: <± 5 ppm (0 ° C ... 40 ° C)
• A G C: <3 dB
• Total Harmonic Distortion: <5% to 90% Mod
• Audio Line Impedance: 600 Ohm
• RF input: 50 W
• Power Supply: Can be built-in inside equipment
or as a separate unit which according to their function.
• Power Supply: 220 VAC + / - 10% / 50 Hz or 24 V DC
• Modulation: Amplitude Modulation
• Transmitter Power: <50 Watt
• Mis Match allowed: VSWR up to infinity
• Spurious Emissions: - 90 dBc
• Harmonic Emission: - 80 dBc
• Modulation depth: 60% - 90%
• Handicapped Modulation: <5%
• Modulation Input: Audio 300 - 2500 Hz
• Input for Dynamic Microphone: 2.5 VRMS - 200 W + / - 20%
• Antenna Impedance: 50 Ohm

Receiver Technical Data:
• Frequency Division :118-137 MHz
• Sensitivity: <3mV
• Shadow Frequency Rejection:> 80dB
• IF Signal Rejection:> 100 dB
• Emphasis Signal intermodulation:> 80 dB
• Squelch Setting: 8 dB - 14 dB
• adjacent channel selectivity:> 70 dB at 25 Khz

Antenna Technical Data:
• Impedance: 50 Ohm
• Type: Omni Directional Antenna
• Field Frequency: 118-137 Mhz